def operation(oper,first,second):
    print(oper)
    if oper == '+':
        print("result: ", first + second)
    elif oper == '-':
        print("result: ", first - second)
    elif oper == '*':
        print("result: ", first * second)
    elif oper == '/':
        print("result: ", first / second)

first=int(input("please input the first number : "))
second=int(input("please input the second number "))
oper = input('please input + - * / :  ')

operation(oper,first,second)